get shell for docker vm on mac
For setting values on the docker vm on your mac you need to get a shell. Elastic has some statements online that don’t work on latest MacOS (14.1.1 + docker desktop 24.0.6). To get a shell you can use this command:
Inspect docker container image without starting it
These two commands result in a file containing a list of all files included in the container image. You can also export the complete container into a tar file:
CORS configuration for REST api accessed from browser
To allow requests against a Spring Boot REST API from a website it is necessary to configure CORS properly. In case you don’t know your client URLs you can allow all clients by adding a mapping like the following in your Kotlin project: This allows access to all endpoints from all origins via GET, POST …
CORS configuration for REST api accessed from browser Read More »
keycloak in docker compose with healthcheck
Docker images from quay.io/keycloak/keycloak don’t contain any commands for a usual healthcheck and installing software is also not trivial. In a discussion on https://github.com/keycloak/keycloak/issues/17273 I found a solution that checks /proc/net/tcp for an open port 8080. That file contains all open ports in hex format. cat and grep are included in the image. So a …
docker pull proxyconnect tcp: dial tcp: lookup http.docker.internal on 192.168.65… timeout
After upgrading to macOS 14.1 my docker installation stopped woring and when I tried to pull an image it answered with the following error message: 192.168.65.0/24 is the configured docker internal network of Docker Desktop. It was running on defaults and I wasn’t aware of any manual changes. DNS of my host system worked properly: …
spritpreisrechner.at OpenAPI Spec
spritpreisrechner.at is a project from e-control and Austrian government to gather fuel prices all over the country. There is a Swagger 2 specification of the API by e-control to use the data. But the host used in that spec doesn’t exist anymore nor should you use swagger 2 for a project in 2023. I updated …
Start PostgreSQL correctly with docker-compose.yml
I’m using PostgreSQL in a lot of projects and in my dev environments I always run it with docker-compose. But configuring it properly isn’t so clear if you want to use proper time zone and a health check. Attached the config with a custom database name “db” and an admin user. With this pg_isready is …
Start PostgreSQL correctly with docker-compose.yml Read More »
Scheduled Facebook posts via Bash
I was looking for an easy way to create scheduled posts on facebook. Though I didn’t find a fully automated way I was able to create a process that only needs manual steps every 60 days. With the app created on facebook developer pages I first need the clientId (appId) and clientSecret (appSecret). The first …
Convert MP4 to webm with ffmpeg
There is no need for extra software for converting video files as long as you’re not afraid of using the shell of your Linux or MacOS. ffpmeg can do a lot for you. For streaming and uploading videos, WebM is the better option because it’s highly compatible with modern browsers and popular for HTML5. For higher-quality …
Intellij stuck with indexing
My intellij 2023.2 continued to repeatedly index something and it was obvious that it was the same again and again. The typical suggestions to invalidate caches plus restart didn’t work. Then I found the suggestion to edit the custom properties file via Help > Edit Custom Properties and add the following: Taken from https://www.jetbrains.com/help/objc/configuring-file-size-limit.html this …